A 4-pole, 3-phase alternator running at 1500 rpm supplies to a 6-pole, 3-phase induction motor which has a rotor current of frequency 2 Hz. The speed of the motor is

Q: Q5. Which of the following types of 1-phase induction motor has the lower power rating? (a)…

A: Shaded Pole Induction Motor: The motor consists of salient poles and a squirrel cage rotor. A…

Q: Calculate the slip of a 6-pole induction motor with a rotor speed of 960 rpm at 口 0.05 口 0.06 0.04

A:

Q: Discuss the significance of SCR in designing an alternator

A: In this we will write about short circuit ratio..

Q: If rotor of an induction motor turns at synchronous speed, the frequency of the rotor will be zero.…

A: In this question we need to verify the given statement is true or false.

Q: Select the following condition on three phase induction motor which gives very low value of slip. O…

A: Choose the correct option Which condition gives low value of slip on 3 phase induction motor.

Q: The O smaller O larger the number of poles used in a stepper motor, the better the resolution

A: here we have to give relation between the number of poles and resolution.

Q: A 10-pole, 3-phase induction motor operates from a supply with frequency 55 Hz. Calculate the speed…

A:

Q: B - Determine the suitable capacitor to ma between Im , Ia at starting running of singl with a…

A: According to question:

Q: What is the copper loss in the rotor circuit in kW? An induction motor is running at 40% of the…

A:

Q: 17. A small single phase, 240 V induction motor is tested in parallel with 160 N resistor. The motor…

A: It is given that: V=240 VR=160 ΩIm=2 AIT=3 A

Q: When 40V DC voltage is applied to a single-phase AC motor, it draws 1A current. When 200v-50Hz AC is…

A: When a dc voltage is applied , the power consumed will be real power = 40*1 = 40 W (v*I). When ac…

Q: A 3-phase induction motor is wound for 2 poles and is supplied from 59-Hz system. When slip is 4%,…

A:

Q: If the supply voltage in a three-phase induction motor is reduced by 10%, what will be the…

A: Given, The supply voltage of a three phase induction motor is reduced by 10 %. Let, E1=EE2=0.9E

Q: In three-phase induction motor rotor speed is always greater than synchronous speed. Select one: O…

A: In induction motor the rotating magnetic field which is produced in the starter will generate flux…

Q: Draw and label both the power and control circuit of a 3 phase DOL induction machine starter

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Q: A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor.…

A: Given that voltmeter is connected to rotor of induction motor and gives 120 oscillations per minute.…

Q: The full load speed of a 60 Hz, 3-phase induction motor is 1120 r.p.m. The number of poles in the…

A: induction motor always near to synchronous speed  and synchronous speed =120*frequencyn. of poles…

Q: If a 3-phase induction motor has synchronous speed of 900 rpm and the frequency in stator is 60Hz,…

A: If a 3-phase induction motor has synchronous speed of 900 rpm and the frequency in stator is 60Hz,…

Q: If a 4-pole induction motor has a synchronous speed of 1500 r.p.m., then, supply frequency is

A: Given an induction motor with, Total number of poles, P = 4 Synchronous speed, Ns=1500 rpm Supply…

Q: When the supply voltage to an induction motor is reduced by 10%, the maximum torque will decrease by…

A: Given, The supply voltage to an induction motor is reduced by 10%. V2=0.9V1

Q: A centre zero ammeter connected in the rotor circuit of a 6-pole 50 Hz induction motor makes 30…

A: Given- 6-pole 50 Hz induction motor, No. of poles p=6, frequency f=50 Hz, 30 oscillations in 1…

Q: The rotor power output of three phase induction motor is 15 kW. What would be the rotor copper loss…

A: Given the rotor power output of three phase induction motor is, Rotor Po/p=15 kW Slip, s = 4 % =…

Q: The ROC for the bilateral Laplace transform of x(t) = e (a) Re(s)-a -atu is, (c) -a<Re(s) <0 (d) ROC…

A: ROC for the bilateral transform of x(t)x(t) =e-atu(t)x(s)=∫-∞∞e-atu(t)e-stdt      =∫0∞e-ate-stdt…

Q: A four-pole, 50Hz induction motor has a full- load slip of 5 percent. The rotor speed of this motor…

A: Given data, Number of poles P =4 Frequency f = 50 Hz Slip s=5 % =0.05

Q: The total number of slots on the stator of a three-phase 6-pole induction motor having 3 slots per…

A: Given a 3- phase induction motor having, Number of pole = 6 Slots per pole per phase = 3 Number of…

Q: The Squirrel cage induction motor has more rotor copper losses. Select one: O True O False

A: Choose the correct option Squirrel cage induction motor has more rotor copper losses?  Is it true or…

Q: the rotor frequency of a four-pole, 60 Hz induction motor with 5% full * load slip is 50 Hz O 60 Hz…

A:

Q: At start the slip of an induction motor is equal to O 0.75 00 O 0.5

A: At starting the rotor speed of induction motor is zero. Nr=0 Let a induction motor with synchronous…

Q: The rotating element of a DC motor is called the

A: The given problem is from DC motors. The detailed solution is given in the next step

Q: 2. A 220V 30 6poles 50Hz induction motor is running at a slip of 3.5 %. Find the following: (a) slip…

A: 2. Given, 3-phase induction motor having  Supply Voltage, V = 220 Volts Number of poles, P = 6…

Q: A 3-phase induction motor has a slip value of 0.02 and a slip frequency of 50Hz. What is the…

A: Given data  A 3-phase induction motor slip s =  0.02 and  Supply frequency f= 50Hz. the frequency of…

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.